1 /********************************************* 1
2 *
3 * Copyright (c) David L. Mills 1993
4 *
5 * Permission to use, copy, modify, and distri
6 * documentation for any purpose and without f
7 * that the above copyright notice appears in
8 * copyright notice and this permission notice
9 * documentation, and that the name University
10 * advertising or publicity pertaining to dist
11 * without specific, written prior permission.
12 * makes no representations about the suitabil
13 * purpose. It is provided "as is" without ex
14 *
15 *********************************************
16
17 /*
18 * Modification history timex.h
19 *
20 * 29 Dec 97 Russell King
21 * Moved CLOCK_TICK_RATE, CLOCK_TICK_FACT
22 * for ARM machines
23 *
24 * 9 Jan 97 Adrian Sun
25 * Shifted LATCH define to allow access t
26 *
27 * 26 Sep 94 David L. Mills
28 * Added defines for hybrid phase/frequen
29 *
30 * 19 Mar 94 David L. Mills
31 * Moved defines from kernel routines to
32 * defines for PPS phase-lock loop.
33 *
34 * 20 Feb 94 David L. Mills
35 * Revised status codes and structures fo
36 * signal discipline.
37 *
38 * 28 Nov 93 David L. Mills
39 * Adjusted parameters to improve stabili
40 * interval.
41 *
42 * 17 Sep 93 David L. Mills
43 * Created file $NTP/include/sys/timex.h
44 * 07 Oct 93 Torsten Duwe
45 * Derived linux/timex.h
46 * 1995-08-13 Torsten Duwe
47 * kernel PLL updated to 1994-12-13 specs
48 * 1997-08-30 Ulrich Windl
49 * Added new constant NTP_PHASE_LIMIT
50 * 2004-08-12 Christoph Lameter
51 * Reworked time interpolation logic
52 */
53 #ifndef _UAPI_LINUX_TIMEX_H
54 #define _UAPI_LINUX_TIMEX_H
55
56 #include <linux/time.h>
57
58 #define NTP_API 4 /* NTP API ver
59
60 #ifndef __KERNEL__
61 /*
62 * syscall interface - used (mainly by NTP dae
63 * to discipline kernel clock oscillator
64 */
65 struct timex {
66 unsigned int modes; /* mode select
67 __kernel_long_t offset; /* time offset
68 __kernel_long_t freq; /* frequency o
69 __kernel_long_t maxerror;/* maximum er
70 __kernel_long_t esterror;/* estimated
71 int status; /* clock comma
72 __kernel_long_t constant;/* pll time c
73 __kernel_long_t precision;/* clock pre
74 __kernel_long_t tolerance;/* clock fre
75 * (read onl
76 */
77 struct timeval time; /* (read only,
78 __kernel_long_t tick; /* (modified)
79
80 __kernel_long_t ppsfreq;/* pps frequen
81 __kernel_long_t jitter; /* pps jitter
82 int shift; /* interval du
83 __kernel_long_t stabil; /*
84 __kernel_long_t jitcnt; /* jitter limi
85 __kernel_long_t calcnt; /* calibration
86 __kernel_long_t errcnt; /* calibration
87 __kernel_long_t stbcnt; /* stability l
88
89 int tai; /* TAI offset
90
91 int :32; int :32; int :32; int :32
92 int :32; int :32; int :32; int :32
93 int :32; int :32; int :32;
94 };
95 #endif
96
97 struct __kernel_timex_timeval {
98 __kernel_time64_t tv_sec;
99 long long tv_usec;
100 };
101
102 struct __kernel_timex {
103 unsigned int modes; /* mode select
104 int :32; /* pad */
105 long long offset; /* time offset
106 long long freq; /* frequency offset (s
107 long long maxerror;/* maximum error (u
108 long long esterror;/* estimated error
109 int status; /* clock comma
110 int :32; /* pad */
111 long long constant;/* pll time constan
112 long long precision;/* clock precision
113 long long tolerance;/* clock frequency
114 * (read onl
115 */
116 struct __kernel_timex_timeval time;
117 long long tick; /* (modified) usecs be
118
119 long long ppsfreq;/* pps frequency (sc
120 long long jitter; /* pps jitter (us) (
121 int shift; /* interval du
122 int :32; /* pad */
123 long long stabil; /* pps st
124 long long jitcnt; /* jitter limit exce
125 long long calcnt; /* calibration inter
126 long long errcnt; /* calibration error
127 long long stbcnt; /* stability limit e
128
129 int tai; /* TAI offset
130
131 int :32; int :32; int :32; int :32
132 int :32; int :32; int :32; int :32
133 int :32; int :32; int :32;
134 };
135
136 /*
137 * Mode codes (timex.mode)
138 */
139 #define ADJ_OFFSET 0x0001 /* tim
140 #define ADJ_FREQUENCY 0x0002 /* fre
141 #define ADJ_MAXERROR 0x0004 /* max
142 #define ADJ_ESTERROR 0x0008 /* est
143 #define ADJ_STATUS 0x0010 /* clo
144 #define ADJ_TIMECONST 0x0020 /* pll
145 #define ADJ_TAI 0x0080 /* set
146 #define ADJ_SETOFFSET 0x0100 /* add
147 #define ADJ_MICRO 0x1000 /* sel
148 #define ADJ_NANO 0x2000 /* sel
149 #define ADJ_TICK 0x4000 /* tic
150
151 #ifndef __KERNEL__
152 #define ADJ_OFFSET_SINGLESHOT 0x8001 /* old
153 #define ADJ_OFFSET_SS_READ 0xa001 /* rea
154 #endif
155
156 /* NTP userland likes the MOD_ prefix better *
157 #define MOD_OFFSET ADJ_OFFSET
158 #define MOD_FREQUENCY ADJ_FREQUENCY
159 #define MOD_MAXERROR ADJ_MAXERROR
160 #define MOD_ESTERROR ADJ_ESTERROR
161 #define MOD_STATUS ADJ_STATUS
162 #define MOD_TIMECONST ADJ_TIMECONST
163 #define MOD_TAI ADJ_TAI
164 #define MOD_MICRO ADJ_MICRO
165 #define MOD_NANO ADJ_NANO
166
167
168 /*
169 * Status codes (timex.status)
170 */
171 #define STA_PLL 0x0001 /* enable PLL
172 #define STA_PPSFREQ 0x0002 /* enable PPS
173 #define STA_PPSTIME 0x0004 /* enable PPS
174 #define STA_FLL 0x0008 /* select freq
175
176 #define STA_INS 0x0010 /* insert leap
177 #define STA_DEL 0x0020 /* delete leap
178 #define STA_UNSYNC 0x0040 /* clock unsyn
179 #define STA_FREQHOLD 0x0080 /* hold freque
180
181 #define STA_PPSSIGNAL 0x0100 /* PPS signal
182 #define STA_PPSJITTER 0x0200 /* PPS signal
183 #define STA_PPSWANDER 0x0400 /* PPS signal
184 #define STA_PPSERROR 0x0800 /* PPS signal
185
186 #define STA_CLOCKERR 0x1000 /* clock hardw
187 #define STA_NANO 0x2000 /* resolution
188 #define STA_MODE 0x4000 /* mode (0 = P
189 #define STA_CLK 0x8000 /* clock sourc
190
191 /* read-only bits */
192 #define STA_RONLY (STA_PPSSIGNAL | STA_PPSJITT
193 STA_PPSERROR | STA_CLOCKERR | STA_NANO
194
195 /*
196 * Clock states (time_state)
197 */
198 #define TIME_OK 0 /* clock synch
199 #define TIME_INS 1 /* insert leap
200 #define TIME_DEL 2 /* delete leap
201 #define TIME_OOP 3 /* leap second
202 #define TIME_WAIT 4 /* leap second
203 #define TIME_ERROR 5 /* clock not s
204 #define TIME_BAD TIME_ERROR /* bw compa
205
206
207 #endif /* _UAPI_LINUX_TIMEX_H */
208
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